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A new process has been developed for spin coating photoresist. Ten wafers have been tested with the new process, and the results of thickness measurements (in µm) are shown below and are assumed to be IIDN. Find a 99% confidence interval on the mean photoresist thickness.
You have a dozen eggs at home, and you know that with them you can make 100 muffins. If you find that half of the eggs have gone bad and can't be used, how many muffins can you make. Express your answer as an integer.
A 2.50 g sample of a bronze gong was cut out and dissolved in suklfuric acid. The copper sulfate produced was mixed with KI to form CuI and the triiodide ion, I3-. The I3- ion was then titrated with thiosulfate, S2O3 2-.
An airplane is pressurized to 650 mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 ft altitude. If air is 21 % oxygen, what is the partial pressure of oxygen on the plane?
Seawater contains approximately 3.5% NaCl by mass and has a density of 1.02g/ml. What volume of seawater contains 6.5g of sodium
Why are the melting points of ionic compounds higher than the melting points of molecular compounds?
The oxygen on the mineral surface gave emitted electron energies at 531 eV, corresponding to the 1s orbital of oxygen. Overall the researchers concluded that oxidation states were +2 for Hg and -2 for O.
what is the osmolarity of a solution that has a concentration of NaCl of 0.300 mol/L?
What is the concentration of toluene in air produced by vaporizing 1 ml of liquid toluene into clean air to produce a total volume of 100 liters
how many grams of sodium sulfide are formed if 1.60 g of hydrogen sulfide is bubbled into a solution containing 2.13 g
Commercial hydrogen peroxide contains small amounts of organic compounds which are added to stabilize the hydrogen peroxide. If these compounds react with permanganate, how will this affect your results
At 521 K the value of Kp for the equilibrium represented by the balanced equation is 1.07 x 100. Calculate the value of Kc at the same temperature. Express answer in scientific notation.
A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater Lake (in Oregon) gave 7.0 disintegrations of carbon-14 nuclei per minute per gram of total carbon.
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